STEPS TO REPRODUCE

1. Visit a page with a list of items like like https://simple.wikipedia.org/wiki/Colour
2. Copy a list to the clipboard
3. Paste the list into the address bar

EXPECTED RESULTS

• Line breaks become spaces between the list items

ACTUAL RESULTS

• Line breaks are erased andthereisnospacebetweenitems

NOTES:

• This is useful when you have copied something and want to do a search by pasting and hitting enter in the address bar
• Oddly, right-clicking the selection and doing "Search Google for …" inserts spaces.
• On MacOS Safari converts line breaks to spaces, but Chrome does not.

I think the original idea is that you are copying a url, that somehow ended up being split on multiple lines. As such the text is all pasted together, because otherwise a url wouldn't work.
But actually, this could be a lot smarter, it may check if the string begins with a protocol and decide how to connect tokens.

This is similar to bug 1327589, and likely there are other bugs around for the same thing, so eventually may be duped.